Question for wax pack experts??

I just bought a couple packs of 1978 topps and found 1979 cards in the packs. Is this something topps did with the excess rappers or did i just get ripped off? Most of the cards were team checklists and rookie prospects and the cards were far from mint. Just checking before I leave negative feedback, because I will more and likely get negative feedback in return.
0
Comments
Kurt
My ebay listings
Doesn't mean you didn't get burnt, but look at the seal before jumping on the seller.
If you don't have Mark Murphy's book on packs it would be worth the $5.
Always looking for Topps Salesman Samples, pre '51 unopened packs, E90-2, E91a, N690 Kalamazoo Bats, and T204 Square Frame Ramly's
all 1978 wax packs do have 1979 cards in them
that is what topps put in the wax packs back then-just call topps and they will tell you the same thing-the packs have never been opened.
My 1934 Goudey Set
61 Topps (100%) 7.96
62 Parkhurst (100%) 8.70
63 Topps (100%) 7.96
63 York WB's (50%) 8.52
68 Topps (39%) 8.54
69 Topps (3%) 9.00
69 OPC (83%) 8.21
71 Topps (100%) 9.21 #1 A.T.F.
72 Topps (100%) 9.39
73 Topps (13%) 9.35
74 OPC WHA (95%) 8.57
75 Topps (50%) 9.23
77 OPC WHA (86%) 8.62 #1 A.T.F.
88 Topps (5%) 10.00